Egads, you people are so sensitive it hurts.
Colbert is a comedian. This is not serious journalism, nor should it be treated as such. I.e. you're allowed to laugh.
Who cares if some authors dislike ebooks? Authors are a diverse group, so it's inevitable that while some will enthusiastically adopt new tech, others will be careful and others will oppose it no matter what. Ebooks will continue to grow in scope despite the handful of (vocal) protestors.
And If Sherman Alexie wants to cut himself off from a segment of the reading public, that's his business.